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Finding the Fourth Proportional to 22,289.66, 30,759.54 and 12,218.66

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Solution

The fourth proportional to 22,289.66, 30,759.54 and 12,218.66 is: 16,861.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,289.66 : 30,759.54 = 12,218.66 : x
  2. Step 2: Convert to fraction form
    22,289.66/30,759.54 = 12,218.66/x
  3. Step 3: Cross multiply
    22,289.66x = 30,759.54 × 12,218.66
  4. Step 4: Simplify right side
    22,289.66x = 375,840,361.02
  5. Step 5: Solve for x
    x = 375,840,361.02/22,289.66
  6. Step 6: Final answer
    x = 16,861.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.